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Author Topic: Floppy emulator  (Read 60988 times)

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Offline mrmkl

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Re: new prototype
« Reply #74 on: February 05, 2006, 06:49:38 PM »
Quote

tnt23 wrote:
Quote

mrmkl wrote:

...
...UARTs, you could read and write floppy-images from a remote computer via RS-232.


Amiga also has RS-232 port, this could be used, too. Some software support from Amiga side would be necessary, like drivers.


ZModem for RS-232? It is usually included with terminal programs. (as an amigaos library in libs:)
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Offline timofonic

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Re: new prototype
« Reply #75 on: February 07, 2006, 04:04:59 AM »
What about megring with 1541-III? I think meging your design with that and using a modular design like I said you before could make this device a lot interesting for more people (more  retroplatforms supported = more people interested). What about releasing the technical stuff with some Creative Commons license for non-commercial use? It could be nice having the stuff you did in self-mounting manner and technical stuff too for hardware geeks and the mounted stuff for the average people ;)

http://commodore-gg.hobby.nl/feb18.htm

What about supporting other formats like DMS (compressed ADF) and IPF? It could be nice if not needing to convert between formats and only copying to the SD/MMC.
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Offline tnt23Topic starter

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Re: new prototype
« Reply #76 on: February 07, 2006, 07:40:14 AM »
Quote

timofonic wrote:
What about megring with 1541-III? I think meging your design with that and using a modular design like I said you before could make this device a lot interesting for more people (more  retroplatforms supported = more people interested). What about releasing the technical stuff with some Creative Commons license for non-commercial use? It could be nice having the stuff you did in self-mounting manner and technical stuff too for hardware geeks and the mounted stuff for the average people ;)

http://commodore-gg.hobby.nl/feb18.htm

What about supporting other formats like DMS (compressed ADF) and IPF? It could be nice if not needing to convert between formats and only copying to the SD/MMC.


Don't know much about 1543-III, will look up the link. I am really uncertain which shape the emulator should take eventually. Making things as universal as possible can be evil sometimes :-)

For IPF format, the problem is that it is not documented, only available as compiled binaries (libraries) and that is not suitable to implement IPF support in this design.

DMS format can be an option, although I believe a desktop (Amiga or PC, or MAC) can be used to convert stuff between DMS and ADF.
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Offline tnt23Topic starter

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Re: Floppy emulator
« Reply #77 on: February 15, 2006, 09:10:46 PM »
Hey ho!

I have fixed that games/demos loading (or rather not loading) problem which turned out to be me not following common floppy timing guidelines. So now I am watching excellent :banana: ARTE! :banana: demo loaded from emulated df0!
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Offline Mikkel

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Re: Floppy emulator
« Reply #78 on: February 17, 2006, 04:29:57 PM »
I've read through the whole thread, but I haven't seen mentioned if you are going to publish source code or compiled .hex-files. Are you?

Excellent project,,keep up the good work!

Anders M.
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Offline tnt23Topic starter

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Re: Floppy emulator
« Reply #79 on: February 17, 2006, 08:09:40 PM »
@Mikkel

Can't tell. Definitely not before I solder a couple of boards for fellow Amiga users to test and see wether thing is a success.
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Offline 5char

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Re: Floppy emulator
« Reply #80 on: March 01, 2006, 08:41:28 AM »
Hi tnt23!

Can you report any news on your floppy project?

/M
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Offline tnt23Topic starter

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Re: Floppy emulator
« Reply #81 on: March 01, 2006, 05:34:51 PM »
Not much news here. While waiting for another couple of PCBs to be done, I am fixing this and that. I had to rework original design a bit to implement INDEX support, as a number of games (namely Cannon Fodder) would not load properly without sensing INDEX pulse.

Different type of LCD, either character 4x20 or graphics 128x32, will probably be used in another design of emulator, along with universal SD/MMC connector.
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Offline 5char

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Re: Floppy emulator
« Reply #82 on: March 01, 2006, 07:02:34 PM »
Go for the big lcd, that would be hitech!

but with that index pulse problem fixed everthing seems to go as planed? My hope is that the floppy emulator will turn in to a product, so i can buy one ;)

/M
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Offline tnt23Topic starter

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Re: Floppy emulator
« Reply #83 on: March 01, 2006, 07:24:11 PM »
Quote

5char wrote:
Go for the big lcd, that would be hitech!

but with that index pulse problem fixed everthing seems to go as planed? My hope is that the floppy emulator will turn in to a product, so i can buy one ;)

/M


Touchscreen would be more dramatic  :lol:

Yes, I'd say the emulator is more or less done. Time to go for feature freezing and feed it into production  :-)
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Offline gcyly

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Re: Floppy emulator
« Reply #84 on: March 25, 2006, 03:08:48 AM »

How are you, can buy?
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Offline tnt23Topic starter

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Re: Floppy emulator
« Reply #85 on: March 25, 2006, 01:22:24 PM »
I'm fine, still waiting to pick up PCBs. Haven't got much time to work on the new (faster) design.
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Offline gcyly

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Re: Floppy emulator
« Reply #86 on: March 25, 2006, 02:56:50 PM »


How are you, and how contact with you?

It reads 1.44M还是144M？
44 Ms are still 144 M?  :-)
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Offline tnt23Topic starter

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Re: Floppy emulator
« Reply #87 on: March 26, 2006, 11:28:49 AM »
Use Private Messages to reach me.

As for 1.44M media - no, the device only emulates DD floppies, that is 720K or 880K. What do you mean by '44 Ms are still 144 M?'  :-o
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Offline gcyly

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Re: Floppy emulator
« Reply #88 on: March 26, 2006, 04:26:04 PM »

How are you, you of e- mail?

   
   My is a gcyly@126.com
 :-)
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Offline Jeff_HxC

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Re: Floppy emulator
« Reply #89 from previous page: April 11, 2006, 12:03:47 AM »
Hi tnt23

I work on a similar project since January. My floppy emulator is a parallel port interface for PC with 2 SRAM buffers (2* 32Ko) and an shift register and some others TTL components. The PC send in real time the MFM flow to the floppy interface.

Actually this interface works for Atari ST and Amiga.

To see some pictures of the prototype of this interface go to this page (in French) :

http://jeanfrancoisdelnero.free.fr/floppy_drive_emulator/

Jeff / HxC2001
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